Reports were taken after each incident, including the most recent alleged flashing in March. But the trail went cold and the investigation was put on hold, Watt said.

The break in the case came in May, when one of the young victims recognized Barrero's car while it was parked. The car and its license plate number were passed on to the Torrance Police Department, Watt said.

"We reopened our investigation and conducted interviews with people and it led to an arrest of Barrero," Watt said.

However, Torrance investigators are concerned that more young girls could have been victimized.

The department released a picture of Barrero's silver Honda Civic hatchback. Anyone with more information about the case is asked to contact the Torrance Police Department at 310-618-5570.